Norm Posted July 14, 2009 Report Share Posted July 14, 2009 ...A can is where you go to take a shit.... Jim C Link to comment Share on other sites More sharing options...
Merry Ploughboy Posted July 14, 2009 Report Share Posted July 14, 2009 "Muffler" also appears in some statutes. Link to comment Share on other sites More sharing options...
jim c 351 Posted July 15, 2009 Report Share Posted July 15, 2009 "Muffler" also appears in some statutes. MP, I have a copy of ATF-P5300.1 (1-75) (formerly IRS Pub. 674. In this booklet is a picture of a Walther P38 with a lawn mower muffler somehow fastened to the barrel. Also stated is the fact the the ATF definition of a silencer is "any device which is attachable to a portable firearm , and is designed to reduce the audible report any measurable amount". There is no doubt that the term muffler would apply in this case. I have no problem with people using imaginative names for their toys. Silencer, suppressor, can, gas flow resister, noise reduction devise, ect. I just hate to see an oldtimer correcting and embarrassing a newbee for not using the oldtimers terminology. Remember a STG-44 is a assault rifle only because Adolph Hitler said so. The very similar MP43 & MP44 were called machine pistols. The AR15 is a semi-auto assault rifle because Dianne Feinstein said so. As far as I'm concerned the M16/M4 are simply military rifles as was the M1, M14, & M1903. By the way my favorite is the official name for the Swedish K 9 m/m--- Bullet squirting pistol. Who can argue with that? Jim C Link to comment Share on other sites More sharing options...
deerslayer Posted July 17, 2009 Report Share Posted July 17, 2009 (edited) http://imagehost.vendio.com/a/4386526/aview/IMG_0633.JPG Just got it today! Coastal M.I.M.S. .45 acp suppressor. I had a spare 16 inch semi auto barrel cut off and threaded for one of the MIMS thread mount interfaces so that I could put them together. I probably could have gone a bit shorter with the barrel, but I figured that the length would basically burn most of the gunpowder in the cartridge, and maybe provide the most sound suppression. And if I took the suppressor off and wanted to shoot the barrel by itself, length would be about right. Quickest gun to put it on was this semi auto that I have set up for quick change barrels. (I'd have to get the barrel wrench out to take off the barrel on a full auto). So, how does it sound? I just shot it 5 times with factory federal ammo. Later I'll try to make a video comparison of this gun and others side by side. It's not silent by any means but without any other .45 acp suppression for comparison, I'd say it was OK. Its a LOT quieter than an unsuppressed .45 acp barrel. I'd say its similar to a unsupressed 22 rifle, but a much lower frequency. It feels like I would still want some sort of hearing protection if I was going to shoot any quantity (but then I'm pretty sound sensitive, I never even shoot .22 without hearing protection). I have the 9mm M.I.M.S suppressor and have shot it on my mac 11. That to me was quieter than this set up. Given the same M.I.M.S. technology used in both suppressors, it would point to what others have said about .45 acp being harder to suppress. It isn't side by side comparison, but Merle had his thompson set up for 9mm and I shot it with a similar size suppressor on it and my memory said it was quieter than this .45 setup. I've got a good suppressor on my m16 and that is probably louder than this set up, but I'm shooting standard high velocity ammo with it so some of the noise is bullet crack. So, look forward to a video comparison in the future. Dan Edited July 17, 2009 by deerslayer Link to comment Share on other sites More sharing options...
John Jr Posted July 19, 2009 Author Report Share Posted July 19, 2009 http://imagehost.vendio.com/a/4386526/aview/IMG_0633.JPG Just got it today! Coastal M.I.M.S. .45 acp suppressor. I had a spare 16 inch semi auto barrel cut off and threaded for one of the MIMS thread mount interfaces so that I could put them together. I probably could have gone a bit shorter with the barrel, but I figured that the length would basically burn most of the gunpowder in the cartridge, and maybe provide the most sound suppression. And if I took the suppressor off and wanted to shoot the barrel by itself, length would be about right. Quickest gun to put it on was this semi auto that I have set up for quick change barrels. (I'd have to get the barrel wrench out to take off the barrel on a full auto). So, how does it sound? I just shot it 5 times with factory federal ammo. Later I'll try to make a video comparison of this gun and others side by side. It's not silent by any means but without any other .45 acp suppression for comparison, I'd say it was OK. Its a LOT quieter than an unsuppressed .45 acp barrel. I'd say its similar to a unsupressed 22 rifle, but a much lower frequency. It feels like I would still want some sort of hearing protection if I was going to shoot any quantity (but then I'm pretty sound sensitive, I never even shoot .22 without hearing protection). I have the 9mm M.I.M.S suppressor and have shot it on my mac 11. That to me was quieter than this set up. Given the same M.I.M.S. technology used in both suppressors, it would point to what others have said about .45 acp being harder to suppress. It isn't side by side comparison, but Merle had his thompson set up for 9mm and I shot it with a similar size suppressor on it and my memory said it was quieter than this .45 setup. I've got a good suppressor on my m16 and that is probably louder than this set up, but I'm shooting standard high velocity ammo with it so some of the noise is bullet crack. So, look forward to a video comparison in the future. Dan Dan, that looks pretty cool. Any idea what sort of baffles they used? TD...Sam is still going strong, however neither of us have done any TSMG shooting in a very long time. Email me and I will take you up on your offer... johntitsworthjr@sbcglobal.net Mike, thanks for posting that article, it was interesting. As for the rest of the guys, thanks for posting. Looks like there is really nothing out there that would clamp onto any existing barrel. I have become such a suppressor person that I seldom shoot any weapon without one. I made one for my 410 shotgun not too long ago... Link to comment Share on other sites More sharing options...
deerslayer Posted July 19, 2009 Report Share Posted July 19, 2009 The M.I.M.S has K baffles. Completely servicable, both end caps come off. I realized after sticking that barrel combination on the gun that I had an SBR even with the suppressor attached. Called NFA branch to check for sure. The weird rules of NFA as some know is that I could stick a full auto bolt (like a couple board members have) into the semi gun, and then it doesn't matter what barrel length you have on the gun as a machine gun designation is kind of like leading trump. I was wondering at the time if putting a silencer on the gun would also do the same thing to barrel length. But NFA branch said that unless permanently welded in place (not happening), the short barrel and silencer needs SBR paperwork on a semi auto. So, I decide to do the SBR paperwork route for the semi auto thompson. That way I'm pretty much covered with anything I do with any of the thompsons I've got. I don't think I'm going to put this on a full auto. Just won't seem right, its an awful lot of stuff sticking way out in front of the gun. On the third hand, I'm thinking of sticking a red dot type sight on this thing (no front sight left on it of course) and see what careful suppressed semi auto accuracy I can get. Can't really think of a use for it right off hand, but maybe somebody will hire me for feral hog eradication or something. Link to comment Share on other sites More sharing options...
AlanDavid Posted July 22, 2009 Report Share Posted July 22, 2009 The picture of the SOE silencer I was thinking of, is on page 383 of The Ultimate Thompson Book. As for the differece between a silencer and a suppresor. The silencer will bleed gases from the barrel to lower the velocity of the projectile below the speed of sound, thus avoiding a sonic crack. The suppresor muffles the gas but does not effect the velocity of the projectile - they work best with sub-sonic ammunition. I purchased a 9mm MK5 (L34A1 in British service) silenced sub-machine gun from Streling in the United Kingdom many years ago. I keep the gun in New Zealand - more sensable gun laws than Australia - and can vouch that on single shot it's very quite. It's also quite accurate owing to the long sight base. On full auto it is certainly more desernable as a small arm. Regards Alan David Sydney Link to comment Share on other sites More sharing options...
emmagee1917 Posted July 22, 2009 Report Share Posted July 22, 2009 As for the differece between a silencer and a suppresor. The silencer will bleed gases from the barrel to lower the velocity of the projectile below the speed of sound, thus avoiding a sonic crack. The suppresor muffles the gas but does not effect the velocity of the projectile - they work best with sub-sonic ammunition. :banghead: as I said...nope Chris Link to comment Share on other sites More sharing options...
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